Preadjustable web slitter and non-deflecting mounting therefor
AssigneeBeloit Corporation
InventorsGerald A. Guild, Kenneth G. Frye
Life of this patent
Estimating the term…
Abstract
Rigid support for adjustable slitter blade heads enables permanent factory setting of slitting overlap and the rake and toe-in angles. The upper blade is mounted on its blade head for both radial and axial movement relative to the lower blade without requiring resetting of the blade overlap and rake and toe-in angles. The blades are replaceable without requiring resetting of the blade cutting overlap and rake and toe-in angles. Full adjustment of the blade supporting heads across the web path is provided for. Setting efficiency is greatly improved.
Claims23
In a slitter comprising a lower blade carried rotatably by a lower blade head and an upper blade carried rotatably by an upper blade head, said blades being cooperative to slit a running web:
- a supporting frame having generally vertically spaced lower and upper rigid parallel beams located, respectively, to underlie and overlie the web transversely in substantially spaced relation to the web, and each of said beams having a respective face which is directed toward the web;
- said lower beam having means on its said face for supporting said lower blade head under the web for selective adjustment longitudinally along the beam and transversely relative to said web;
- said upper beam having means on its said face for supporting said upper blade head for selective adjustment longitudinally along said upper beam and transversely relative to the web;
- at least one of said beams having a bed plate fixed to its said face and extending therealong for a distance substantially as long as the width of said web, and having a lip along its length projecting horizontally from one side of said one beam;
- a rail fixed on said bed plate and projecting toward the web and extending throughout substantially the length of said bed plate;
- the blade head supported by said one beam having means thereon engaging said rail for longitudinal adjustment movement along the rail;
- and
- said one beam blade head having a surface thereon engaging one side of said lip, a clamping element engaging the opposite side of said lip, and means for releasably drawing said clamping element and said one beam head toward one another and thereby effecting a clamping engagement of said lip between said head surface and said clamping element for maintaining said one beam blade head in selected adjusted position along said rail and said one beam and relative to the other of said blade heads.
In a slitter having a lower blade carried rotatably by a lower blade head and an upper blade carried rotatably by an upper blade head, said blades being cooperative to slit a running web, means for supporting said heads adjustably relative to one another and transversely relative to the path of the running web, means mounting one of said blades for movement relative to its carrying head into and out of slitting cooperation with the other of said blades, means normally biasing said one blade out of said slitting cooperation, and means operative for overcoming said biasing means for selectively holding said one blade in slitting cooperation with said other blade, the improvement comprising:
- shaft means mounting said one blade on its associated blade head and having both of said biasing means and means operative for overcoming said biasing means located at one end portion of said shaft means and said one blade connected to the opposite end portion of said shaft means;
- eccentric means associated with said shaft means between said opposite end portions;
- a pinion connected with said eccentric means in a location between said opposite end portions;
- a rack meshing with said pinion and mounted for reciprocation relative to said pinion;
- and means for selectively actuating said rack for turning said pinion and thereby operating said eccentric means for effecting said movement of said one blade into and out of said slitting cooperation.
In a slitter having a lower blade carried rotatably by a lower blade head and an upper blade carried rotatably by an upper blade head, said blades being cooperative to slit a running web, means for supporting said heads adjustably relative to one another and transversely relative to the path of the running web, means mounting one of said blades for movement relative to its carrying head into and out of slitting cooperation with the other of said blades, means normally biasing said one blade out of said slitting cooperation, and means operative for overcoming said means for selectively holding said one blade in slitting cooperation with said other blade, the improvement comprising:
- said mounting means comprising hollow shaft means fixed on one end to said one blade carrying head;
- tubular hub means extending rotatably about said fixed shaft means and thereby supporting said one blade for rotation about said fixed shaft means;
- plunger means mounted reciprocably in said fixed shaft means and having rotary means extending past the distal end of said fixed shaft means for connecting said plunger means with said tubular hub means;
- and means within the proximal end portion of said fixed shaft means and acting on the inner end portion of said plunger means for shifting the plunger means axially for effecting correponding axial movement of said rotary means and said tubular hub means and said one blade.
In a slitter having a lower blade carried rotatably by a lower blade head and an upper blade carried rotatably by an upper blade head, said blades being cooperative to slit a running web, means mounting one of said blades on its blade head and including an eccentric, and means for actuating said eccentric rotatably for moving said one blade radially into and out of web slitting relation to the other of said blades, the improvement comprising:
- a pinion fixed to said eccentric, a reciprocable rack meshing with said pinion;
- actuator means for operating said rack, means normally active for biasing said shaft means and thereby said one blade in a blade separating direction, and means controlled by said rack for overcoming said biasing means for loading said one blade toward said other blade.
Dependencies are inferred from the claim text.